n = int(input())
if n >= 1800 and n <= 1999:
  print('1')
elif n >= 1600:
  print('2')
elif n >= 1400:
  print('3')
elif n >= 1200:
  print('4')
elif n >= 1000:
  print('5')
elif n >= 800:
  print('6')
elif n >= 600:
  print('7')
elif n >= 400:
  print('8') n = int(input()) n int(input()) int input() input if n >= 1800 and n <= 1999:
  print('1')
elif n >= 1600:
  print('2')
elif n >= 1400:
  print('3')
elif n >= 1200:
  print('4')
elif n >= 1000:
  print('5')
elif n >= 800:
  print('6')
elif n >= 600:
  print('7')
elif n >= 400:
  print('8') n >= 1800 and n <= 1999 n >= 1800 n 1800 n <= 1999 n 1999 print('1') print '1' elif n >= 1600:
  print('2') n >= 1600 n 1600 print('2') print '2' elif n >= 1400:
  print('3') n >= 1400 n 1400 print('3') print '3' elif n >= 1200:
  print('4') n >= 1200 n 1200 print('4') print '4' elif n >= 1000:
  print('5') n >= 1000 n 1000 print('5') print '5' elif n >= 800:
  print('6') n >= 800 n 800 print('6') print '6' elif n >= 600:
  print('7') n >= 600 n 600 print('7') print '7' elif n >= 400:
  print('8') n >= 400 n 400 print('8') print '8' n = int(input()) int(input()) n
n = int(input())
if n >= 1800 and n <= 1999:
  print('1')
elif n >= 1600:
  print('2')
elif n >= 1400:
  print('3')
elif n >= 1200:
  print('4')
elif n >= 1000:
  print('5')
elif n >= 800:
  print('6')
elif n >= 600:
  print('7')
elif n >= 400:
  print('8')